摘要
本文利用台州电厂堆煤场砂井地基分层沉降实测数据,反分析确定非理想砂井地基参数。(砂井渗透系数Kw;土层水平向、竖向渗透系数Kh和Kv,地基压缩模量Es;染抹区渗透系数Ks和范围S)。为避免初始值不当及缩小搜索区间,首先运用正交设计法确定各参数的变化区间,随后采用POWELL最优化方法确定各参数。
This paper is proceed to back analysis those geotechnical parameters of vertical drains. The direct approach of back analysis BASW program is based on both the theoretical solutions for vertical drains taking account of welire sistance and smear action and powell's conjugative direction method. In order to erduce amount of work and cancel the bad combinations of parameters, the Orthogonal Design is developed. The field data are from Taizhou Power Plant. Zhejiang, P. R. China. The results the parameters determined by back xnxlysis arc in good agreement with those observed. It may be concluded that the methods of determining the parameters of vertical drains by back analysis is reliable.
基金
国家自然科学基金会青年基金
关键词
砂井地基参数
正交设计法
堆煤场
Mechnical parametcrs of verticai well, Orthogonal dcsign. Optimim mrthod
